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help with possible current loss

Printed From: the12volt.com
Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=36081
Printed Date: March 23, 2026 at 5:01 AM


Topic: help with possible current loss

Posted By: bigblackhoe
Subject: help with possible current loss
Date Posted: July 24, 2004 at 4:12 AM

ok what im trying to accomplish is this: i have a little pa/horn thing mounted up in my overhead console and its ignition powered. i want to mount my radar detector up above my rear view mirror and wire it into the positive wire for the pa/horn. will there be enough current for both of these coming from that one wire, and could you explain why whichever answer it is?




Replies:

Posted By: jc18750
Date Posted: July 24, 2004 at 6:05 AM
most likely there will be enough power, but to be on the safe side you could wire your radar to a relay and use the pos wire of your pa horn as a trigger

87 radar detector

30 12v+ constant

85 ground

86 tap into the pos of the pa/horn

this will draw power from your constant instead of your pa/horn.

(or you could just tap the ignition wire in the steering column.)


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